Single collage editing including background removal and character retouching

The subject of the order is to edit a collage showing 15 images of a woman in the following weeks of pregnancy. The photos that make up the collage were taken on different backgrounds and under different lighting.

Editing should include:

a) removing the background and leaving a white background on the entire photo (including the penultimate photo with a completely different background from the others),

b) minimizing the differences in skin colors in individual photos,

c) cutting out a small fragment of the ground on which the character is standing in individual photos so that the differences are not visible (or adding a shadow to mask the differences),

d) overall enhancement of lighting/contrast throughout the composition.

The photo is planned to be printed in the 30x40 cm format. A white frame should be added, which on the target printout will be 1 cm thick, and at the same time will not distort the proportions of the photo to the print (3x4).